Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab589cfd47690255…

MALICIOUS

PDF

42.2 KB Authoring application: OpenOffice.org
MD5: 9e20cf90a6583094c5f9cbe169fdc30b SHA-1: cc9fb228efc87c6b7c575aff1080d06e4f824da3 SHA-256: ab589cfd47690255b4b96da15ede86e0883915f7ded8387a0ae377dbb51d1ff6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to other PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. No scripts were extracted, but the document body and heuristics point to a link-farming distribution method.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://fumevoluj.weebly.com/uploads/1/3/0/5/130539652/7001968.pdf
    • http://acause2travel.org/uploads/1/3/0/2/130272988/vedutan-xezujav-luxinoworawu-waduk.pdf
    • http://bandheadreunions.com/uploads/1/3/0/5/130539188/5979290.pdf
    • https://bagosinoz.weebly.com/uploads/1/3/0/5/130550756/8948c46efd58071.pdf
    • https://suxejifobobam.weebly.com/uploads/1/3/0/5/130539792/wizobo.pdf
    • http://basav.aerogarant.moscow/uploads/2020/01/28/fe9f5186.pdf
    • http://shop-top558.ru/uploads/2020/01/28/farixifitadi.pdf
    • http://zef.inzim-tex.com/uploads/2020/01/27/xuvifedet_gofamamure_xoratividuku.pdf
    • http://deltonahowl.com/uploads/1/3/0/2/130270777/5f3fe99e0db1b99.pdf
    • http://neuropsicologiaeducativasm.com/uploads/1/3/0/5/130551832/1b9098b.pdf
    • http://thedoulaamanda.com/uploads/1/3/0/5/130540366/4658039.pdf
    • http://noblecountylibrary.com/uploads/1/3/0/5/130590371/fawoxixalofixak-gitixesevew-muberaparunudaf-vowawe.pdf
    • http://reclaimeddesignworks.net/uploads/1/3/0/4/130476401/vadeku.pdf
    • http://mindfulevolution.net/uploads/1/3/0/4/130436482/5ca19be43d81.pdf
    • http://seniors1stfinancial.com/uploads/1/3/0/3/130379445/5553775.pdf
    • http://panafo.kazahstan-kepy.fun/uploads/2020/01/29/pufuxaveve.pdf
    • http://yambego.com/uploads/1/3/0/5/130588307/bojoleje.pdf
    • http://davidmarquesibanez.com/uploads/1/3/0/6/130604030/130604030.html#citroen+c1+flair+manual

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000155d.bin
0f2aaac6b864b9c0a7a9851553a8e89fac8823508c62f70a07313e2ad1e9ef42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x155D 8708 bytes
font_01_sfnt_off000068f1.bin
4057385a92689eef0b68eb084716e829e00ca34d8c63799f5e27b1fe126685ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F1 2072 bytes

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